As an important way of converting mechanical energy into electric energy,a piezoelectric nanogenerator(PENG)has been widely applied in energy harvesting as well as self-powered sensors in recent years.However,its robu...As an important way of converting mechanical energy into electric energy,a piezoelectric nanogenerator(PENG)has been widely applied in energy harvesting as well as self-powered sensors in recent years.However,its robustness and durability are still severely challenged by frequent and inevitable mechanical impacts in real application environments.Herein,a fully selfhealing PENG(FS-PENG)as a self-powered pressure sensing electronic skin is reported.The self-healing piezoelectric composite and self-healing Ag NW electrode fabricated through mixing piezoelectric PZT particles and conductive Ag NWs into self-healing polydimethylsiloxane(H-PDMS)are assembled into the sandwich structure FS-PENG.The FS-PENG could not only effectively convert external stimulation into electrical signals with a linear response to the pressure but also retain the excellent self-healing and stable sensing property after multiple cycles of cutting and self-healing process.Moreover,a self-healing pressure sensor array composed of 9 FS-PENGs was attached on the back of the human hand to mimic the human skin,and accurate monitoring of the spatial position distribution and magnitude of the pressure was successfully realized.展开更多
In the past decades,the progress of wearable and portable electronics is quite rapid,but the power supply has been a great challenge for their practical applications.Wearable power sources,especially wearable energy-h...In the past decades,the progress of wearable and portable electronics is quite rapid,but the power supply has been a great challenge for their practical applications.Wearable power sources,especially wearable energy-harvesting devices,provide some possible solutions for this challenge.Among various wearable energy harvesters,the high-performance fabric-based triboelectric nanogenerators(TENGs)are particularly significant.In this review paper,we first introduce the fundamentals of TENGs and their four basic working modes.Then,we will discuss the material synthesis,device design,and fabrication of fabric-based TENGs.Finally,we try to give some problems that need to be solved for the further development of TENGs.展开更多
基金supported by the NSFC(No.81801847)Natural Science Basic Research Plan in Shaanxi Province of China(No.2021JQ-200,2020JM-182,2019JQ-652).
文摘As an important way of converting mechanical energy into electric energy,a piezoelectric nanogenerator(PENG)has been widely applied in energy harvesting as well as self-powered sensors in recent years.However,its robustness and durability are still severely challenged by frequent and inevitable mechanical impacts in real application environments.Herein,a fully selfhealing PENG(FS-PENG)as a self-powered pressure sensing electronic skin is reported.The self-healing piezoelectric composite and self-healing Ag NW electrode fabricated through mixing piezoelectric PZT particles and conductive Ag NWs into self-healing polydimethylsiloxane(H-PDMS)are assembled into the sandwich structure FS-PENG.The FS-PENG could not only effectively convert external stimulation into electrical signals with a linear response to the pressure but also retain the excellent self-healing and stable sensing property after multiple cycles of cutting and self-healing process.Moreover,a self-healing pressure sensor array composed of 9 FS-PENGs was attached on the back of the human hand to mimic the human skin,and accurate monitoring of the spatial position distribution and magnitude of the pressure was successfully realized.
基金This work was supported by the NSFC(Nos.51472111 and 81801847)the Fundamental Research Funds for the Central Universities(Nos.JB191407,JB181402,and lzujbky-2018-ot04)+1 种基金the National Natural Science Foundation of Shaanxi Province(No.2018JQ5153)the National Program for the Support of Top-Notch Young Professionals.
文摘In the past decades,the progress of wearable and portable electronics is quite rapid,but the power supply has been a great challenge for their practical applications.Wearable power sources,especially wearable energy-harvesting devices,provide some possible solutions for this challenge.Among various wearable energy harvesters,the high-performance fabric-based triboelectric nanogenerators(TENGs)are particularly significant.In this review paper,we first introduce the fundamentals of TENGs and their four basic working modes.Then,we will discuss the material synthesis,device design,and fabrication of fabric-based TENGs.Finally,we try to give some problems that need to be solved for the further development of TENGs.
